Question: Write a definition for a class Book. The Book class has data attributes for a title, an author name and the number of pages. The

Write a definition for a class Book. The Book class has data attributes for a title, an author name and the number of pages. The class also has the following methods:

a. An _ _init_ _ method for the class. The method should accept arguments for each of the data attributes.

b. A special _ _len_ _ method to return the number of pages in the book.

c. An _ _str_ _ method that returns a string showing the state of the object.

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